Sakai O, Curtin H D, Faquin W C, Fabian R L
Department of Radiology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, USA.
AJNR Am J Neuroradiol. 2000 Mar;21(3):584-6.
A 74-year-old man with a history of a chondroid lesion of the larynx noted an enlarging neck mass. Axial CT showed a large expansile lesion arising from the left thyroid cartilage. Multiple rings and arcs with relatively intact cortex indicated a chondroid lesion. Irregularity of the anterolateral margin abutted a prominent soft-tissue component. The specimen obtained from fine needle aspiration was suggestive of a malignant fibrous histiocytoma. After further resection, the final diagnosis was dedifferentiated chondrosarcoma. A new soft-tissue component or rapid growth of the mass can be indicative of a diagnosis of dedifferentiated chondrosarcoma.
一名74岁男性，有喉部软骨样病变病史，发现颈部肿物增大。轴位CT显示一个源于左甲状腺软骨的巨大膨胀性病变。多个环形和弧形结构，皮质相对完整，提示为软骨样病变。前外侧边缘不规则，紧邻一个突出的软组织成分。细针穿刺获取标本提示为恶性纤维组织细胞瘤。进一步切除后，最终诊断为去分化软骨肉瘤。肿物出现新的软组织成分或快速生长可能提示去分化软骨肉瘤的诊断。
